Human Rights Watch Egypt Director Heba Morayef weighs in on violence against protesters. We find out what is behind rising obesity rates in Mexico. 'Sound Opinions' assistant producer Annie Minoff highlights some of the similarities and differences in music industries around the globe.

Mauritania, a large but sparsely populated country in northwestern Africa, has a rich musical tradition but virtually no formal music industry. That means no commercial radio stations. No record labels. No music clubs.